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Dendrobium jonesii

Discussion in 'Orchid Species' started by Marni, Dec 21, 2008.

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  1. Marni

    Marni Well-Known Member Staff Member Supporting Member

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    Jon, you asked about culture for this species. Here's what I know.

    For several years I grew this with 50F minimum and a dry rest in winter. It bloomed pretty well. I moved it to my colder greenhouse about 1 1/2 years ago (because I didn't know it was NOT a cold grower). The images shown here are from April 08. So last winters it had 42F minimum nights, quite bright light (as for Laelia anceps, L. speciosa and Cymbidium species). The summers are 50-55 nights and warmer days, usually in the 80's and occassionally 90 or 100. There is no cooling in this greenhouse, more of a breezeway in the warmer weather. From November until late winter it is quite dry with an ocassional misting or sprinkle.

    A friend who has spent a lot of time in Australia warned me that it was not a cold grower, but mine has done fine and is still in the coldest greenhouse. So my experience does not bear out what the literature and sage advice are telling me. If you move yours and it dies, I'm not buying you a new one.
    dend.jonesii.plant.jpg dend.jonesii.spike.jpg
     
  2. Jon

    Jon Mmmm... bulbophyllum...

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    Hmmm... judging from your pictures, I don't have dendrobium jonesii. Mine has short little fat pb's. I'll post a picture of mine to my culture thread.

    Nicely bloomed, btw. :cool:
     
  3. Tracey

    Tracey Interloper

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    Jon, maybe you have johnsoniae. I killed one once, don't remember it having short pseudobulbs, but it does have a white flower? It is a New Guinea species.
     
  4. Craig

    Craig megalomaniac

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    Hey Jon,
    These will quite happily grow under 50% shade cloth down to about 1c, any colder and a solid roof would be the best way to go. I can’t say I’ve ever experienced -28c, so I guess you’ll have to work that one out for your self. I have seen them growing on tallish trees at the ends of the larger branches up at the Atherton Tableland at the back of Cairns in Tracyland:rolleyes: I mean Queensland and if my memory serves me right that was at about 800m give or take. I have also seen just recently a very short stumpy form with bulbs to about 10 inch tall and about ¾ of an inch thick in the centre that tapers off top & bottom to about ¼ of an inch, the bulbs had a reddish tinge, I guess indicating it had come from a very bright area. The older bulbs still had lichen on them, this I guess would indicate that it comes from a cloud forest type area, put the two together and this is much the same as the area I saw them. The clouds would come in every night and then burn off during the day. This is also a wet season dry season type climate, so what Marni says about a dry winter rest is necessary.
    Hope this helps, Craig
     
  5. Tracey

    Tracey Interloper

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    In my dreams. I'm about 20 hours south of Cairns. That converts to about a gazillion degrees in winter :(
     
  6. Forrest

    Forrest Really Neat

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    very nice Marnie.